## Sunday, December 20, 2020

# Electric Circuits and Networks by K. S. Suresh Kumar

Chapter 1 Preliminaries to Circuit Analysis

Chapter 2 Fundamentals of Resistive Circuits

Chapter 3 Circuit Equivalence

Chapter 4 Circuit Theorems

Chapter 5 Circuit Simplification

Chapter 6 Circuit Equations

Chapter 7 Capacitors, Inductors, and Duality

Chapter 8 Sinusoidal Steady State

Chapter 9 Linear Transformer

Chapter 10 Ideal Transformers

Chapter 11 Basic Responses of First-Order Circuits

Chapter 12 Basic Responses of Second-Order Circuits

Chapter 13 Ideal Operational Amplifier

Chapter 14 Frequency Responses

Chapter 15 Butterworth and Active Filters

Chapter 16 Responses to Periodic Inputs

Chapter 17 Real, Reactive, and Complex Power

Chapter 18 Responses to Step and Impulse Inputs

Chapter 19 Switched Circuits with Initial Energy Storage

Chapter 20 Convolution

Chapter 21 Properties of the Laplace Transform

Chapter 22 Laplace Transform in Circuit Analysis

Chapter 23 Fourier Transform

Chapter 24 Two-Port Circuits

Chapter 25 Balanced Three-Phase Systems

This book is more than a textbook on electric circuits. It is a veritable learning reference that presents electric circuit analysis in a simplified manner, without sacrificing rigor and thoroughness. The book is a sequel to the author’s Electric Circuits and Signals, CRC Press, 2008.

The electric signal material has been omitted and circuit analysis is treated in a more simplified and expanded form. The book differs from other textbooks on electric circuits in its pedagogy and

organization, as expounded later, particularly in the following respects.

Effective problem solving based on (a) a systematic, logical, and imaginative approach, having the acronym ISDEPIC, formulated by the author and refined over the past several years through interaction with students, and (b) presenting a variety of topics and examples that foster problem-solving skills by encouraging the student to view a problem in different ways, particularly fresh and original ways, founded on a sound understanding of fundamentals. The author firmly believes that a course on electric circuits provides an excellent opportunity to nurture problem-solving skills, as a central objective of quality engineering education. That is why some topics, such as exploitation of symmetry in electric circuits, are included, although they are of limited practical importance.

It is emphasized from the very beginning that circuits obey two universal conservation laws: conservation of energy and conservation of charge, which imply, respectively, conservation of power and conservation of current. Kirchhoff’s laws are simply an expression of these conservation laws and not some sacrosanct laws that are peculiar to electric circuits. They are convenient to apply in lieu of the more fundamental conservation laws because they are linear in voltage and current.

a first course on electric circuits, if desired. Some sections and examples in both Parts I and II are marked with a star to indicate that they may be skipped in a more limited coverage of the material. More than 430 exercises are included at the ends of most sections of chapters, or within sections. These exercises are of two types: (1) Primal exercises that are simple, straightforward applications of the main concepts discussed and are intended to allow students to practice direct applications of concepts and help them gain some self-confidence in doing so and (2) exercises that are not labeled “Primal” and that serve to extend some aspects of the topics discussed, or to verify some simple assertions made in the text, and not discussed in detail for the sake of brevity or avoidance of tedious repetition. More than 175 solved examples are included throughout the book to illustrate the topic being discussed. In almost all examples, a PSpice simulation is added after the solution, followed by problem-solving tips, whenever appropriate, to emphasize some useful problemsolving techniques. A “Learning Checklist” is added at the end of the main body of every chapter so as to serve both as a summary and as a check on the understanding of the main concepts and ideas presented in the chapter. The Learning Checklist is followed by a list of all the problem-solving tips in the solved examples of the chapter. More than 1500 problems are included at the ends of chapters for students to test their understanding of the material and apply the problem-solving skills they have acquired. Some of these are of the “shortsolution” type that test for the understanding of a specific concept, without involving much calculation. Other problems are of the “long-solution” type that require the logical formulation of a number of sequential calculation steps in order to obtain the required results. In general, the exercises and problems are ordered in increasing level of “challenge.” Design-type problems are included as a group at the ends of some chapters, wherever appropriate. Another group of problems, labeled “Probing Further,” are added at the ends of some chapters in order to examine some more advanced or specific topics. Answers are given following all exercises and problems that are not intended to verify or prove something.

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